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Chromogranin A (CHGA) is a member of the chromogranin/secretogranin family of neuroendocrine secretory proteins. It is found in secretory vesicles of neurons and endocine cells. CHGA is a precursor to three biologically active peptides: vasostatin, pancreastatin, and parastatin. These peptides act as autocine or paracrine negative modulators of the neuroendocrine system. CHGA is an excellent marker for carcinoid tumors, pheo-chromocytomas, paragangliomas, and other neuro-endocrine tumors. Coexpression of chromogranin A and neuron specific enolase (NSE) is common in neuroendocrine neoplasms.
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Protein Aliases: betagranin (N-terminal fragment of chromogranin A); catestatin; CgA; chromofungin; Chromogranin-A; CTNNB; DKFZp686D02253; FLJ25606; FLJ37923; MGC105435; parathyroid secretory protein 1; Pituitary secretory protein I; SP-I
Gene Aliases: CGA; CHGA
UniProt ID: (Human) P10645
Entrez Gene ID: (Human) 1113
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